General election 2010: Early Plaid Cymru gain in Arfon

Boundary changes in this new constituency had replaced the Plaid base with a traditionally strong Labour area in the city of Bangor, but Plaid emerged victorious with 36 per cent of the vote and a 3.7 per cent swing from Labour.

Labour lost the overall majority it gained after the boundary changes with 30.4 per cent of the vote while the Tories received 16.9 per cent.